Earlier this month, Riman went to MSG to meet Joel ahead of his concert, and thought he'd only have time for a quick hello. Then, the legendary musician did something surprising.

"Out of nowhere, Billy Joel was gracious enough to ask Logan if he wanted to join him on stage to play," the teen's mother Leah Riman told CBS New York.

Riman started playing "Piano Man," and Joel joined in. The two played a duet together in an empty arena -- just two piano men, following their passion.

"At Madison Square Garden… it was so cool. That was amazing," Riman told CBS New York.

IMAGE: CBS

Music has always been important to Riman. The teen, who was born blind, said music seemed to calm him as a baby. He started taking piano lessons at just two years old. He's now a music prodigy, but it wasn't always easy being himself.

"He gets bullied a lot, he gets judged a lot, but people shouldn't do that," his mother said. "He's an incredible child, very smart, you get to know him, give him a chance, you'll love him. Don't judge people, give them their chance."

Riman's mum is hoping the video of his Billy Joel performance shows people there are no limits. "I am so thankful to Garden of Dreams for literally fulfilling his dream, my dream for him," she said.

Logan practices playing a wide variety of music, but since meeting Joel himself, he's decided to work on perfecting one of the superstar's other songs: "Scenes From an Italian Restaurant."